export const isLongitude = value => {
  return /^[\-\+]?(0(\.\d{1,10})?|([1-9](\d)?)(\.\d{1,10})?|1[0-7]\d{1}(\.\d{1,10})?|180\.0{1,10})$/.test(value);
};

export const isLatitude = value => {
  return /^[\-\+]?((0|([1-8]\d?))(\.\d{1,10})?|90(\.0{1,10})?)$/.test(value);
};

export const isPhoneNumber = value => {
  return /^1[3456789]\d{9}$/.test(value);
};

export const isExternal = value => {
  return /^(https?:|mailto:|tel:)/.test(value);
};

export const isWebsite = value => {
  return /^(?:(http|https|ftp):\/\/)?((?:[\w-]+\.)+[a-z0-9]+|localhost)((\:([1-9][0-9]{0,3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]{1}|6553[0-5]))?)((?:\/[^/?#]*)+)?(\?[^#]+)?(#.+)?$/.test(
    value
  );
};

export const isEmail = value => {
  return /^([a-zA-Z]|[0-9])(\w|\-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/.test(value);
};

const checkCode = val => {
  var p = /^[1-9]\d{5}(18|19|20)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/;
  var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
  var parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];
  var code = val.substring(17);
  if (p.test(val)) {
    var sum = 0;
    for (var i = 0; i < 17; i++) {
      sum += val[i] * factor[i];
    }
    if (String(parity[sum % 11]) === code.toUpperCase()) {
      return true;
    }
  }
  return false;
};

const checkProv = val => {
  var pattern = /^[1-9][0-9]/;
  var province = {
    11: '北京',
    12: '天津',
    13: '河北',
    14: '山西',
    15: '内蒙古',
    21: '辽宁',
    22: '吉林',
    23: '黑龙江 ',
    31: '上海',
    32: '江苏',
    33: '浙江',
    34: '安徽',
    35: '福建',
    36: '江西',
    37: '山东',
    41: '河南',
    42: '湖北 ',
    43: '湖南',
    44: '广东',
    45: '广西',
    46: '海南',
    50: '重庆',
    51: '四川',
    52: '贵州',
    53: '云南',
    54: '西藏 ',
    61: '陕西',
    62: '甘肃',
    63: '青海',
    64: '宁夏',
    65: '新疆',
    71: '中国台湾',
    81: '中国香港',
    82: '中国澳门'
  };
  if (pattern.test(val)) {
    if (province[val]) {
      return true;
    }
  }
  return false;
};

const checkDate = val => {
  var pattern = /^(18|19|20)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)$/;
  if (pattern.test(val)) {
    var year = val.substring(0, 4);
    var month = val.substring(4, 6);
    var date = val.substring(6, 8);
    var date2 = new Date(year + '-' + month + '-' + date);
    if (date2 && date2.getMonth() === parseInt(month) - 1) {
      return true;
    }
  }
  return false;
};

export const isIdNumber = value => {
  if (checkCode(value)) {
    var date = value.substring(6, 14);
    if (checkDate(date)) {
      if (checkProv(value.substring(0, 2))) {
        return true;
      }
    }
  }
  return false;
};

export const isPassword = value => {
  return /(?!.*\s)(?=.*[0-9])(?=.*[a-zA-Z]).{6,20}/.test(value);
};
